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Mobile phone with position counting function

A mobile phone, calculated technology, applied in the direction of positioning, measuring device, selection device, etc., can solve problems such as inability to accurately judge position, limitation, and inability to use

Inactive Publication Date: 2002-10-23
MAXELL HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the method described above cannot be used in such an environment
[0007] When a mobile phone attempts to determine its location using the GPS method or using the RF carrier transmitted from the base station of the cellular communication system, there are locations where it is not possible to accurately determine a location
Therefore, these traditional methods limit the area where location information services can be provided

Method used

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  • Mobile phone with position counting function
  • Mobile phone with position counting function

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Embodiment Construction

[0014] It should be understood that the drawings and descriptions of the present invention have been simplified to show relevant components for a clear understanding of the present invention, while other well-known components have been omitted for clarity. Those of ordinary skill in the art will recognize that other components are desirable and / or required in order to practice the present invention. However, because these components are well known in the art, and because they cannot contribute to a better understanding of the present invention, a discussion about these components is not provided here. A detailed description is provided below with reference to the accompanying drawings.

[0015] figure 2 An example of this method is shown, where a mobile handset determines its position according to the invention. Initially, the mobile handset performs an operation 600 of receiving a GPS-oriented signal (hereinafter, referred to as GPS signal), which includes synchronously ac...

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Abstract

Mobile handsets with location computing. In order to extend the area in which a mobile handset can determine its position using radio waves, the present invention provides a mobile handset equipped with a device for calculating its position using radio waves transmitted from GPS satellites and using a base station of a cellular communication system A device that calculates the position of an incoming RF carrier wave. The positioning results obtained from the two position computing devices are then combined and weighted using GPS positioning reliability and cellular positioning reliability, respectively. A weighted average of these results is then output as a final position calculation result.

Description

technical field [0001] The present invention relates to a mobile handset capable of determining its current location by using radio waves. Background technique [0002] Various techniques by which a mobile handset can determine its current location, for example, using the Global Positioning System (GPS), have been used in practical applications, such as car navigation systems. There may also be a method in which, together with the method using GPS, a cellular phone network is used to notify a mobile phone of additional information for receiving radio waves of GPS. See Nikkei Communications, Nikkei Communications, Nikkei Business Publications, Inc., July 16, 2000, p. 120. [0003] Another approach is also known in which a mobile handset receives radio (RF) carriers transmitted from base stations for cellular telephone communications, and the mobile handset uses the propagation delay times of these RF carriers to calculate its current location. See Japanese Patent Applicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/02G01S5/10G01S19/12G01S19/48H04W64/00
CPCH04W64/00G01S19/48G01S5/0257G01S5/10G01S19/45G01S19/46
Inventor 恒原克彦桑原斡夫
Owner MAXELL HLDG LTD
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